Google's efforts to bring RCS to the world haven't been as inspiring as many of us had hoped, largely due to slow adoption by carriers and some self-serving behavior on the part of certain OEMs (cough). However, some of this can also be attributed to limits in Android itself. To use RCS today, you have no choice in app selection — you're stuck using apps provided by your phone's OEM, be it Google, Samsung, LG, or another partner. Earlier this year, it looked like Google had added code to Android Q that would enable third party apps to support RCS, but that was disputed shortly after.
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